I have another question regarding block and it may be related to my file.

If I don't have the 'stab-rib-top' layer visible and I select the block 'rib-1' and then click the 'edit block' button the entity is not visible. If I make the 'stab-rib-top' layer visible I can see the block entity for editing. [EDIT: figures this one out, the rib outline was in the stab-rib-top layer, odd thing is that it would not disappear when the stab-rib-top layer was made invisible. Could be I had a mix of entities in the block...? ]

I also noticed that after editing a block and closing the editor the main drawing doesn't show the results necessarily. If I click on block 'rib-1' and click on the edit button and delete the inside edge line(s) and the click on the 'x' of the block edit window the change does not seem to have happened. If I close the file and reopen it the change shows up.

Before going to block edit on the rib1 block
After removing the inside line
After closing the block edit window.

mikeperik wrote:Got a new file. If I use the 'Draw Equidintant Polylines' tool on the rib and click on the outside of the rib 4 circles appear. If I click on the inside of the rib the circles do not appear.

Any ideas why this is happening?

Mike

It looks like these 'ribs' come in an extremely high resolution. Some segments are as small as 0.00001. As a result, some arc segments of the equidistant have identical start- and endpoints, so QCad assumes that they must be full circles. QCad will filter out these segments in upcoming versions when the equidistant is created.